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https://issues.apache.org/jira/browse/HDFS-8921?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16210274#comment-16210274
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Plamen Jeliazkov commented on HDFS-8921:
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Yes, I am interested. I have a rough first patch. Would you help review it with
me?
I can confirm it caps over-utilized sources but we should consider whether we
should cap above-average and the other possible sources as well.
> Add an option to Balancer for specifying the k-most over-utilized DNs or all
> over-utilized DNs as sources.
> ----------------------------------------------------------------------------------------------------------
>
> Key: HDFS-8921
> URL: https://issues.apache.org/jira/browse/HDFS-8921
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: balancer & mover
> Reporter: Tsz Wo Nicholas Sze
>
> Arpit suggested to add a separate option to source from the most
> over-utilized DataNodes first so the administrator does not have to pass the
> source DNs manually; see [this
> comment|https://issues.apache.org/jira/browse/HDFS-8826?focusedCommentId=14700576&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14700576].
> The new option could allow specifying the k-most over-utilized DNs or all
> over-utilized DNs as sources.
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